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Transom repair question
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<blockquote data-quote="lugoismad" data-source="post: 465072" data-attributes="member: 16518"><p>Don't use regular plywood.</p><p></p><p>And you don't want to use treated plywood because the copper in it reacts with the aluminum on the boat.</p><p></p><p>What I used on my previous 16' boat was birch plywood. You want to use the birch because it doesn't have voids in it like regular plywood, so it won't compress or break down as easily and won't hold moisture. Mount it up, drill all the holes for the bolts, and then soak both pieces in as many coats of spar urethane as you can. At least 3 coats, if not 5. Just keep letting it soak it up. Especially around the edges where its been cut. Then after the urethane has dried, paint it with some oil base paint. You want to prevent it from soaking up any water, so you need to plug all of the pores in it.</p></blockquote><p></p>
[QUOTE="lugoismad, post: 465072, member: 16518"] Don't use regular plywood. And you don't want to use treated plywood because the copper in it reacts with the aluminum on the boat. What I used on my previous 16' boat was birch plywood. You want to use the birch because it doesn't have voids in it like regular plywood, so it won't compress or break down as easily and won't hold moisture. Mount it up, drill all the holes for the bolts, and then soak both pieces in as many coats of spar urethane as you can. At least 3 coats, if not 5. Just keep letting it soak it up. Especially around the edges where its been cut. Then after the urethane has dried, paint it with some oil base paint. You want to prevent it from soaking up any water, so you need to plug all of the pores in it. [/QUOTE]
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